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(8090283) -1- T530(E)(M29)T
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T530(E)(M29)T APRIL EXAMINATION
NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
29 March 2016 (X-Paper) 9:00–13:00
REQUIREMENTS: One A2 drawing paper
This question paper consists of 10 pages.
(8090283) -2- T530(E)(M29)T
Copyright reserved Please turn over
DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
INSTRUCTIONS AND INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use BOTH sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Work neatly.
(8090283) -3- T530(E)(M29)T
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MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING [10]
Correctness 5
Line work 2
Accuracy and proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING [25]
2.1 Correctness – Full-sectional front view 5
2.2 Correctness – Full-sectional top view 7
2.3 Correctness – Full-sectional left view 5
Line work – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING [30]
3.1 Correctness 16
Line work 5
Accuracy 5
3.2 Title and scale 2
Layout and neatness 2
QUESTION 4: DETAILED DRAWING [20]
4.1.1 Correctness – Full-sectional front view (Item 1) 3
4.2.1 Correctness – Full-sectional front view (Item 2) 5
4.2.2 Correctness – Full-sectional left view (Item 2) 4
Line work – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 5: ISOMETRIC PROJECTION [15]
Correctness 8
Line work 2
Accuracy 2
Scale 2
Layout and neatness 1
TOTAL 100
(8090283) -4- T530(E)(M29)T
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QUESTION 1: FREEHAND DRAWING FIGURE 1 shows a full-sectional front view of a bracket. Make a freehand drawing of the given view, approximately full size.
FIGURE 1
[10]
(8090283) -5- T530(E)(M29)T
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QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in THIRD-ANGLE ORTHOGRAPHIC PROJECTION, the following views of the component:
2.1 A full-sectional front view with the top view in section (9) 2.2 A full-sectional top view (9) 2.3 A full-sectional right view on cutting plane X-X (7) No hidden detail is necessary.
FIGURE 2 [25]
(8090283) -6- T530(E)(M29)T
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QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a swivel head. The complete list of parts is as follows:
ITEM DESCRIPTION QUANTITY
1 Base 1
2 Swivel head 1
3 Bush 1
4 Shaft 1
5 Collar 1
6 Pin 1
7 Washer 1
8 M16 Hexagonal nut (not shown) 1
3.1 Draw as an assembly drawing, to scale 1 : 1, a full-sectional front view of the
assembly.
(28) 3.2 Insert item numbers only on the assembly drawing. (2)
(8090283) -7- T530(E)(M29)T
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FIGURE 3 [30]
(8090283) -8- T530(E)(M29)T
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QUESTION 4: DETAILED DRAWING FIGURE 4 shows two primary views of a roller-jack assembly. Draw, to scale 1 : 1 and in FIRST-ANGLE ORTHOGRAPHIC PROJECTION, detailed drawings of the following items:
4.1 The roller-jack body (Item 1) showing the following view:
A full-sectional front view
(6) 4.2 The roller cradle (Item 2) showing the following views: 4.2.1 A full- sectional front view (8) 4.2.2 A full- sectional left view (6) NO hidden detail is necessary.
(8090283) -9- T530(E)(M29)T
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FIGURE 4 [20]
(8090283) -10- T530(E)(M29)T
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QUESTION 5: ISOMETRIC PROJECTION FIGURE 5 shows the primary views of a component. Construct an isometric scale and then draw an isometric projection of the component. NO hidden detail is necessary.
FIGURE 5 [15] TOTAL: 100
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NATIONAL CERTIFICATE
APRIL EXAMINATION
ENGINEERING DRAWING N3
29 MARCH 2016
This marking guideline consists of 6 pages.
MARKING GUIDELINE
MARKING GUIDELINE -2- T530(E)(M29)T ENGINEERING DRAWING N3
Copyright reserved Please turn over
QUESTION 1
[10]
MARKING GUIDELINE -3- T530(E)(M29)T ENGINEERING DRAWING N3
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QUESTION 2
[25]
MARKING GUIDELINE -4- T530(E)(M29)T ENGINEERING DRAWING N3
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QUESTION 3
[30]
MARKING GUIDELINE -5- T530(E)(M29)T ENGINEERING DRAWING N3
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QUESTION 4
[20]
MARKING GUIDELINE -6- T530(E)(M29)T ENGINEERING DRAWING N3
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QUESTION 5
[15] TOTAL: 100
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T540(E)(J31)T
AUGUST EXAMINATION
NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
31 JULY 2015 (Y-Paper) 13:00–17:00
REQUIREMENT: 1 A2 drawing sheet
This question paper consists of 11 pages and 1 A3 prepared sheet
(8090283) -2- T540(E)(J31)T
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DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Work neatly.
(8090283) -3- T540(E)(J31)T
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MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING (10)
Correctness 5
Line work 2
Accuracy and proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING (25)
2.1 Correctness – Full-sectional front view 5
2.2 Correctness – Full-sectional top view 6
2.3 Correctness – Full-sectional left view 6
Line work 3
Accuracy 3
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING (30)
3.1 Correctness – assembly of components, full-sectional drawing 18
Line work 5
Accuracy 5
Layout and neatness 2
QUESTION 4: DETAIL DRAWING (20)
4.1.1 Correctness – Full-sectional front view (Item 1) 5
4.1.2 Correctness – Top view (Item 1) 4
4.2.1 Correctness – Half-sectional front view (Item 2) 3
Line work – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 5: PERSPECTIVE DRAWING (15)
Correctness 6
Line work 3
Accuracy 3
SP + LVP + RVP 3
TOTAL 100
(8090283) -4- T540(E)(J31)T
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QUESTION 1: FREEHAND DRAWING Figure 1 shows a full-sectional front view of a pulley assembly. Make a freehand drawing of the given view, approximately full size.
FIGURE 1
[10]
(8090283) -5- T540(E)(J31)T
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QUESTION 2: SECTIONAL DRAWING Figure 2 shows two primary views of a component. Draw, to scale 1 : 1 and in first-angle orthographic projection, the following views of the component:
2.1 A full-sectional front view on cutting plane X–X (8) 2.2 A full-sectional top view on cutting plane Y–Y (8) 2.3 A full-sectional left view on cutting plane Z–Z (9)
(8090283) -6- T540(E)(J31)T
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[25]
(8090283) -7- T540(E)(J31)T
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QUESTION 3: ASSEMBLY DRAWING Figure 3 on the next page shows the primary views of the components of an adjustable support for a lathe. The complete list of parts is as follows:
ITEM DESCRIPTION QUANTITY
1 Mounting bracket 1
2 Centre plate 1
3 Holder 1
4 M10 square head bolt 1
5 Washer 1
6 M10 hexagonal nut 1
Draw, as an assembly drawing to scale 2 : 1, a full-sectional front view of the assembly.
(8090283) -8- T540(E)(J31)T
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[30]
(8090283) -9- T540(E)(J31)T
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QUESTION 4: DETAILED DRAWING Figure 4 on the next page shows a full-sectional front view and a full-sectional top view on cutting plane X–X of a horizontal disc mounting tool. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following items:
4.1 The mounting bracket (Item 1) showing the following views: 4.1.1 A full front view (8) 4.1.2 A top view (7) 4.2 A half-sectional front view of the mounting disc (Item 2) with the right half in
section
(5) No hidden detail is necessary.
(8090283) -10- T540(E)(J31)T
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[20]
(8090283) -11- T540(E)(J31)T
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QUESTION 5: PERSPECTIVE DRAWING NOTE: THIS QUESTION MUST BE ANSWERED ON THE PREPARED SHEET AND
ATTACHED TO THE DRAWING SHEET.
Use the information shown on the prepared ANSWER SHEET to draw a neat two-point perspective view of the machined block. Point A is situated in line with the centre of vision and up against the picture plane. Line AB vanishes to the right at 30º. The distance of the eye in front of the picture plane is 100 mm.
No hidden detail is necessary. [15]
TOTAL: 100
(8090283) T540(E)(J31)T
Copyright reserved Please turn over
Copyright reserved Please turn over
NATIONAL CERTIFICATE
AUGUST EXAMINATION
ENGINEERING DRAWING N3
31 JULY 2015
This marking guideline consists of 8 pages.
MARKING GUIDELINE
MARKING GUIDELINE -2- T540(E)(J31)T ENGINEERING DRAWING N3
Copyright reserved Please turn over
MARK ALLOCATION FOR CORRECTNESS – AUGUST 2015 (This guideline must be used in conjunction with the Marking Guideline)
QUESTION 1 1 mark for each of the areas indicated on the marking guideline = 5 marks QUESTION 2
FSFV 3 marks for correct sectioning = 3 marks ½ mark for each of the unsectioned webs = 1 mark
½ mark for the ø16 unsectioned hole = ½ marks ½ mark for the M16 tapped hole = ½ marks
TOTAL = 5 marks
FSTV ½ mark for correctly sectioning each of the 4 webs = 2 marks ½ mark for each of the 2 unsectioned areas of the webs = 1 mark ½ mark for each unsectioned areas of the base = 2 marks 1 mark all 4 ø10 holes on the base = 1 mark
TOTAL = 6 marks
FSLV 3 marks for correct sectioning of the left view = 3 marks ½ mark for each of the 2 unsectioned webs = 1 mark ½ mark for each of the 2 unsectioned countersunk holes = 1 mark 1 mark the unsectioned ø16 hole = 1 mark
TOTAL = 6 marks QUESTION 3 1 mark for each of items 1 to 6 correctly assembled = 6 marks Item 1: 1 mark for correct sectioning = 1 mark
1 mark for the unsectioned bottom area = 1 mark 1 mark for the unsectioned area on the top left of the item = 1 mark
1 marks for the unsectioned part of the 35 x 10 slot = 1 mark Item 2: Correct sectioning = 2 marks Item 3: Correct sectioning = 2 marks Unsectioned web = 1 mark Unsectioned tapped hole = 1 mark Item 4: Unsectioned bolt = 1 mark Item 5: Unsectioned washer = 1 mark TOTAL = 18 marks
MARKING GUIDELINE -3- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 4
FSFV (Item 1) 1 mark correct sectioning on the left of the centre line = 1 mark 1 mark correct sectioning on the right of the centre line = 1 mark 1 marks for the unsectioned protruding portion = 1 mark ½ mark for the each unsectioned web = 1 mark ½ mark for the unsectioned ø18 hole = ½ mark ½ mark for the unsectioned ø4 hole = ½ mark TOTAL = 5 marks
TV (Item 1)
½ mark for each unsectioned protruding portion = 1 mark ½ mark for each circle = 1 mark ½ mark for each unsectioned 10 mm web = 1 mark
½ mark for the unsectioned 6 mm web = ½ mark ½ mark for the 10 x 50 mm area = ½ mark
TOTAL = 4 marks
HSLV (Item 2)
½ mark for correct sectioning = ½ mark ½ mark for the unsectioned ø6 hole = ½ mark ½ mark each for the unsectioned ø24 and ø 16 holes = 1 mark ½ mark for the unsectioned “flange” = ½ mark ½ mark for the unsectioned “flange base” = ½ mark
TOTAL = 3 marks QUESTION 5
See marking guideline for allocation of marks = 6 marks
MARKING GUIDELINE -4- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 1
[10]
MARKING GUIDELINE -5- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 2
[25]
MARKING GUIDELINE -6- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 3 (This answer to be replaced by corrected answer- arrangements have been made with internal moderator/examiner to make changes and to print hardcopies. The external moderator will collect them from newcastle and courier to umalusi to forward to dhet)
[30]
MARKING GUIDELINE -7- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 4 (THE ANSWER TO BE REPLACED WITH ENGLISH VERSION OF MARK ALLOCATION - ARRANGEMENTS HAVE BEEN MADE WITH INTERNAL MODERATOR/EXAMINER TO MAKE CHANGES AND TO PRINT HARDCOPIES. THE EXTERNAL MODERATOR WILL COLLECT THEM FROM NEWCASTLE AND COURIER TO UMALUSI TO FORWARD TO DHET)
[20]
MARKING GUIDELINE -8- T540(E)(J31)T ENGINEERING DRAWING N3
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QUESTION 5
TOTAL: [15]
100
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T540(E)(A15)T
APRIL EXAMINATION
NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
15 April 2015 (Y-Paper) 13:00–17:00
This question paper consists of 10 pages.
(8090283) -2- T540(E)(A15)T
Copyright reserved Please turn over
DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
INSTRUCTIONS AND INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.
(8090283) -3- T540(E)(A15)T
Copyright reserved Please turn over
MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING [10]
Correctness 5
Line work 2
Accuracy and proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING [25]
2.1 Correctness – Full sectional front view 8
2.2 Correctness – Full sectional right view 7
Line work – 2 marks per view 4
Accuracy – 2 marks per view 4
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING [30]
3.1 Correctness – assembly of components, full sectional drawing 16
Line work 5
Accuracy 5
Title and scale 2
Layout and neatness 2
QUESTION 4: DETAIL DRAWING [20]
4.1.1 Correctness – Front view (Item 1) 4
4.1.2 Correctness – Top view (Item 1) 6
4.2.1 Correctness – Front view (Item 2) 2
Line work – 1 marks per view 3
Accuracy – 1 marks per view 3
Layout and neatness 2
QUESTION 5: PERSPECTIVE DRAWING [15]
Correctness 8
Line work 2
Accuracy 2
Isometric projection 2
Layout and neatness 1
TOTAL 100
(8090283) -4- T540(E)(A15)T
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QUESTION 1: FREEHAND DRAWING FIGURE 1 shows an isometric view of a component. Make a freehand drawing of the given view, approximately full size.
FIGURE 1 [10]
(8090283) -5- T540(E)(A15)T
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QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in third-angle orthographic projection, the following views of the component:
2.1 A full sectional front view (13) 2.2 A full sectional right view (12)
PASTE FIGURE 2 FIGURE 2 [25]
(8090283) -6- T540(E)(A15)T
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QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a flange coupling. The complete list of parts is as follows:
ITEM DESCRIPTION QUANTITY
1 Flange 1
2 Flange 1
3 Bush 1
4 Driving shaft 1
5 Driven shaft 1
6 M8 hexagon head bolt 6
7 M8 hexagonal nut 6
1.1 Draw, as an assembly drawing to scale 1 : 1, a full sectional front view of the
assembly.
(28) 1.2 Insert a suitable title and scale centrally below the assembly. (2)
(8090283) -7- T540(E)(A15)T
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PASTE FIGURE 3 FIGURE 3 [30]
(8090283) -8- T540(E)(A15)T
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QUESTION 4: DETAILED DRAWING FIGURE 4 shows two primary views of a rotating table jig. Draw, to scale 1 : 2 and in first-angle orthographic projection, detailed drawings of the following items:
4.1 The base (Item 1) showing the following views: 4.1.1 A front view (7) 4.1.2 A top view (8) 4.2 The spindle (Item 2) showing the following views: 4.2.1 A front view (5) No hidden detail is necessary.
(8090283) -9- T540(E)(A15)T
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PASTE FIGURE 4
FIGURE 4 [20]
(8090283) -10- T540(E)(A15)T
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QUESTION 5: ISOMETRIC PROJECTION FIGURE 5 shows the primary views of a geometric model. Construct an isometric scale and then draw an isometric projection of the model. Make 'P' the lowest point. No hidden detail is necessary.
PASTE FIGURE 5
FIGURE 5 [15]
TOTAL: 100
Copyright reserved Please turn over
NATIONAL CERTIFICATE
BACKUP EXAMINATION
ENGINEERING DRAWING N3
BACKUP 2014
This marking guideline consists of 6 pages.
MARKING GUIDELINE
MARKING GUIDELINE -2- T560(E)(BU)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -3- T560(E)(BU)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -4- T560(E)(BU)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -5- T560(E)(BU)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -6- T560(E)(BU)T ENGINEERING DRAWING N3
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T560(E)(N27)T
NOVEMBER EXAMINATION
NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
27 November 2014 (Y-Paper) 13:00–17:00
REQUIREMENTS: One A2 drawing paper
This question paper consists of 9 pages and 1 addendum.
(8090283) -2- T560(E)(N27)T
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DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
INSTRUCTIONS AND INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Answer ALL the questions. Read ALL the questions carefully. Number the answers correctly according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.
(8090283) -3- T560(E)(N27)T
Copyright reserved Please turn over
MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING [10]
Correctness 5
Line work 2
Accuracy & Proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING [25]
2.1 Correctness – Full sectional front view 8
2.2 Correctness – Full sectional right view 7
Linework – 2 marks per view 4
Accuracy – 2 marks per view 4
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING [30]
3.1 Correctness – assembly of components, full sectional drawing 18
Line work 5
Accuracy 5
Layout and neatness 2
QUESTION 4: DETAIL DRAWING [20]
4.1.1 Correctness – Full sectional front view (Item 1) 5
4.2.1 Correctness – Full sectional front view (Item 2) 5
4.3.1 Correctness – Front view (Item 3) 2
Linework – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 5: PERSPECTIVE DRAWING [15]
Correctness 6
Linework 3
Accuracy 3
SP + LVP + RVP 3
TOTAL 100
(8090283) -4- T560(E)(N27)T
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QUESTION 1: FREE HAND DRAWING
FIGURE 1 shows a full sectional front view of a component. Make a freehand drawing of the given view, approximately full size.
FIGURE 1 [10]
(8090283) -5- T560(E)(N27)T
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QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in third-angle orthographic projection, the following views of the component:
2.1 A full sectional front view (13) 2.2 A full sectional right view on cutting plane X-X (12)
FIGURE 2 [25]
(8090283) -6- T560(E)(N27)T
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QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a drive shaft connector. The complete list of parts is as follows:
ITEM DESCRIPTION QUANTITY
1 Left fork end 1
2 Centre piece 1
3 Right fork end 1
4 Left drive shaft 1
5 Right drive shaft 1
6 Pin 2
7 Collar 2
8 Pin 2
Draw as an assembly drawing, to scale 1 : 1, a full sectional front view of the assembly.
(8090283) -7- T560(E)(N27)T
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PASTE FIGURE 3 FIGURE 3 [30]
(8090283) -8- T560(E)(N27)T
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QUESTION 4: DETAILED DRAWING FIGURE 4 shows the front view of a cone clutch assembly. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following items:
4.1 The driving drum (Item 1) showing the following view: 4.1.1 A full sectional front view (7)
4.2 The driven drum (Item 2) showing the following view: 4.2.1 A full sectional front view (8) 4.3 The drive shaft (Item 3) showing the following view: 4.3.1 A front view (5) No hidden detail is necessary.
FIGURE 4 [20]
(8090283) -9- T560(E)(N27)T
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QUESTION 5: PERSPECTIVE DRAWING NOTE:
THIS QUESTION MUST BE ANSWERED ON THE PREPARED A3 ANSWER SHEET AND ATTACHED TO THE DRAWING PAPER.
Use the information shown on the prepared A3 ANSWER SHEET to draw a neat two-point perspective view of the machined block. Point A is situated in line with the centre of vision and up against the picture plane. Line AB vanishes to the left at 60°. The distance of the eye in front of the picture plane is 120 mm. No hidden detail is necessary.
[15]
TOTAL: 100
(8090283) -10- T560(E)(N27)T
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ADDENDUM
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NATIONAL CERTIFICATE
NOVEMBER EXAMINATION
ENGINEERING DRAWING N3
27 NOVEMBER 2014
This marking guideline consists of 7 pages.
MARKING GUIDELINE
MARKING GUIDELINE -2- T520(E)(N27)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -3- T520(E)(N27)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -4- T520(E)(N27)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -5- T520(E)(N27)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -6- T520(E)(N27)T ENGINEERING DRAWING N3
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MARKING GUIDELINE -7- T520(E)(N27)T ENGINEERING DRAWING N3
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T520(E)(A6)T AUGUST EXAMINATION
NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
6 August 2014 (Y-Paper) 13:00–17:00
This question paper consists of 10 pages.
(8090283) -2- T520(E)(A6)T
Copyright reserved Please turn over
DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
INSTRUCTIONS AND INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use BOTH sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.
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MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING (10)
Correctness 5
Line work 2
Accuracy and proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING (25)
2.1 Correctness – Full sectional front view 8
2.2 Correctness – Full sectional left view 7
Line work – 2 marks per view 4
Accuracy – 2 marks per view 4
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING (30)
Correctness – assembly of components, full sectional drawing 18
Line work 5
Accuracy 5
Layout and neatness 2
QUESTION 4: DETAIL DRAWING (20)
4.1.1 Correctness – Full sectional front view (Item 1) 4
4.1.2 Correctness – Left view (Item 1) 4
4.2.1 Correctness – Front view ( Item 2) 4
Line work – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 5: PERSPECTIVE DRAWING (15)
Correctness 8
Line work 2
Accuracy 2
Isometric projection 2
Layout and neatness 1
TOTAL: 100
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QUESTION 1: FREEHAND DRAWING Figure 1 shows an isometric view of a component. Make a freehand drawing of the given view, approximately full size.
FIGURE 1
[10]
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QUESTION 2: SECTIONAL DRAWING Figure 2 shows two primary views of a component. Draw, to scale 1 : 1 and in first-angle orthographic projection, the following views of the component:
2.1 A full sectional front view on cutting plane X-X (12) 2.2 A full sectional left view on cutting plane Y-Y (13)
FIGURE 2 [25]
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QUESTION 3: ASSEMBLY DRAWING Figure 3 on the next page shows the primary views of the components of a tension pulley assembly. The complete list of parts is as follows:
ITEM DESCRIPTION QUANTITY
1 Mounting frame 1
2 Wheel 1
3 Bush 1
4 Collar 1
5 Collar 1
6 Shaft 1
7 Washer 1
8 M18 hexagonal nut (not shown) 1
Draw, as an assembly drawing to scale 1 : 1, a half-sectional front view of the assembly with the top half in section.
No hidden detail is necessary.
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[30]
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QUESTION 4: DETAILED DRAWING Figure 4 on the next page shows two primary views of a link mechanism assembly. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following views:
4.1 The frame (Item 1) showing the following views: 4.1.1 A full sectional front view (7)
4.1.2 A left view (6) 4.2 The shaft (Item 2) showing the following view: 4.2.1 A front view (7) No hidden detail is necessary.
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FIGURE 4
[20]
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QUESTION 5: ISOMETRIC PROJECTION Figure 5 shows the primary views of a geometric model.
Construct an isometric scale and then draw an isometric projection of the model.
No hidden detail is necessary. [15]
TOTAL: 100
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NATIONAL CERTIFICATE
AUGUST EXAMINATION
ENGINEERING DRAWING N3
6 AUGUST 2014
This marking guideline consists of 7 pages.
MARKING GUIDELINE
MARKING GUIDELINE -2- T520(E)(A6)T ENGINEERING DRAWING N3
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QUESTION 1 [10]
MARKING GUIDELINE -3- T520(E)(A6)T ENGINEERING DRAWING N3
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QUESTION 2 [25]
MARKING GUIDELINE -4- T520(E)(A6)T ENGINEERING DRAWING N3
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QUESTION 3 [30]
MARK ALLOCATION CORRECTNESS 18% LINE WORK 5% ACCURACY 5% LAYOUT AND NEATNESS 2% TOTAL 30%
MARKING GUIDELINE -5- T520(E)(A6)T ENGINEERING DRAWING N3
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QUESTION 4 [20]
MARKING GUIDELINE -6- T520(E)(A6)T ENGINEERING DRAWING N3
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QUESTION 5
TOTAL:
[15] 100
MARKING GUIDELINE -7- T520(E)(A6)T ENGINEERING DRAWING N3
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MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING (10)
Correctness 5
Line work 2
Accuracy and proportion 2
Layout and neatness 1
QUESTION 2: SECTIONAL DRAWING (25)
2.1 Correctness – Full sectional front view 8
2.2 Correctness – Full sectional left view 7
Line work – 2 marks per view 4
Accuracy – 2 marks per view 4
Layout and neatness 2
QUESTION 3: ASSEMBLY DRAWING (30)
Correctness – assembly of components, full sectional drawing 18
Line work 5
Accuracy 5
Layout and neatness 2
QUESTION 4: DETAIL DRAWING (20)
4.1.1 Correctness – Full sectional front view (Item 1) 4
4.1.2 Correctness – Left view (Item 1) 4
4.2.1 Correctness – Front view ( Item 2) 4
Line work – 1 mark per view 3
Accuracy – 1 mark per view 3
Layout and neatness 2
QUESTION 5: PERSPECTIVE DRAWING (15)
Correctness 8
Line work 2
Accuracy 2
Isometric projection 2
Layout and neatness 1
TOTAL: 100
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